Data restore when you flash new rom?

Hi,
I like testing new ROMS, but there is something annoying, that maybe can be solved.
Every time I wipe, phone data is erased (that's the logical behaviour) and I have to reinstall all my applications (I do it with android commander which is pretty fast), but the problem is I have to reconfigure all the settings, that takes me a lot of time.
Do you know if there is any way to backup / restore configuration for the apps ? I tried TitaniumBackup, whith the save data option, but does not work.

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